When is hydroquinone treatment recommended for post-inflammatory hyperpigmentation?

Post-inflammatory hyperpigmentation is extra colour left after acne, eczema, a rash, a wound, or another inflamed skin problem settles. Hydroquinone acts on pigment production, so it cannot replace treatment for active acne, dermatitis, infection, or ongoing irritation. Applying a strong product while inflammation continues may worsen sensitivity and can lead to more discoloration. The shade, depth, location, and skin history all affect the plan.

Have the underlying trigger assessed and treated first. Once the skin is calm, a clinician can decide whether hydroquinone fits the mark and demonstrate a thin application to intact skin. Use a gentle cleanser and moisturiser, avoid picking or scrubbing, and protect exposed areas from daylight. Do not increase the amount or frequency to speed the change. Keep follow-up appointments so treatment can be paused or changed if redness, stinging, or unusual darkening develops.

Arrange a review if marks continue appearing, the original rash is spreading, or the area is painful, itchy, cracked, oozing, or swollen. Stop hydroquinone and seek advice for severe irritation, blistering, or a blue-grey or blotchy colour change. A mark that bleeds, forms a persistent crust, changes shape, or does not fit the earlier inflammation needs examination rather than repeated lightening treatment.

Ask what caused the inflammation, whether it is fully controlled, how to distinguish pigment from an active rash, where to apply treatment, and what skin-care routine will reduce further darkening.